CN101471578A - Charging system and charger - Google Patents

Charging system and charger Download PDF

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Publication number
CN101471578A
CN101471578A CNA2008101801270A CN200810180127A CN101471578A CN 101471578 A CN101471578 A CN 101471578A CN A2008101801270 A CNA2008101801270 A CN A2008101801270A CN 200810180127 A CN200810180127 A CN 200810180127A CN 101471578 A CN101471578 A CN 101471578A
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China
Prior art keywords
unit
status information
charging
described battery
charger
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CNA2008101801270A
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Chinese (zh)
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CN101471578B (en
Inventor
阿部享充
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Canon Inc
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Canon Inc
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/443—Methods for charging or discharging in response to temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/04—Regulation of charging current or voltage
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

A charger that charges a battery unit including a secondary battery, includes a receiving unit, a detection unit, a determination unit, and a control unit. The receiving unit receives, from the battery unit, battery state information indicating a state of the battery unit, if the secondary battery is being charged. The detection unit detects charge state information indicating the state of the battery unit, if the secondary battery is being charged. The determination unit determines, using the battery state information and the charge state information, whether the battery unit is in a normal state. The control unit controls charging of the secondary battery in the battery unit depending on whether the battery unit is in the normal state.

Description

Charging system and charger
Technical field
The present invention relates to a kind of charger and the charging system that comprises this charger.
Background technology
In the method that the secondary cell to lithium ion (lithium-ion) battery etc. charges, charger is measured the branch pressure voltage of charging voltage, charging current and battery pack, and the charging of battery pack is controlled.Japanese kokai publication hei 10-201109 communique has illustrated that a kind of charger can communicate and control the charging system of charging with battery pack.
In the above-mentioned example of correlation technique, charger is controlled charging according to the information of the battery pack that receives from battery pack.Yet the charger of correlation technique can not use the information of the battery pack that receives from battery pack to judge whether mistake has taken place the battery pack.
Summary of the invention
The present invention relates to a kind ofly be used to use the information of the battery pack that receives from battery pack to judge whether this battery pack is in the charger and the charging system of normal condition.The present invention relates to a kind of charger and charging system that is used for controlling safely the operation that battery pack is charged.
According to an aspect of the present invention, a kind of charger is provided, be used for the battery unit that comprises secondary cell is charged, described charger comprises: receiving element, if be used for described secondary cell being charged, then receive the battery status information of the state of the described battery unit of expression from described battery unit; Detecting unit if be used for described secondary cell being charged, then detects the charging status information of the state of the described battery unit of expression; Judging unit is used to use described battery status information and described charging status information to judge whether described battery unit is in normal condition; And control unit, be used for whether being in normal condition and control charging the described secondary cell of described battery unit according to described battery unit.
According to another aspect of the present invention, provide a kind of charging system, comprising: battery unit, it comprises secondary cell; And charger, be used for described secondary cell is charged.Described battery unit comprises: first detecting unit, if be used for described secondary cell charge, then detect the battery status information of the state of the described battery unit of expression; And transmitting element, be used for sending described battery status information to described charger.Described charger comprises: second detecting unit, if be used for described secondary cell being charged, then detect the charging status information of the state of the described battery unit of expression; Receiving element if be used for described secondary cell being charged, then receives described battery status information from described battery unit; Judging unit is used to use described battery status information and described charging status information to judge whether described battery unit is in normal condition; And control unit, be used for whether being in normal condition and control charging the described secondary cell of described battery unit according to described battery unit.
By below with reference to the explanation of accompanying drawing to exemplary embodiments, it is obvious that further feature of the present invention will become.
Description of drawings
The accompanying drawing that is included in the specification and constitutes a specification part illustrates exemplary embodiments of the present invention, feature and aspect, and is used from specification one and explains principle of the present invention.
Fig. 1 is the block diagram that illustrates according to the typical structure of the charger of the first embodiment of the present invention and battery pack.
Fig. 2 is used to illustrate the flow chart that utilizes the operation that charger charges to the battery pack that is installed to this charger.
Fig. 3 is the flow chart that is used to illustrate according to the measured value checked operation of the charger of first embodiment.
Fig. 4 is the flow chart that is used to illustrate according to the measured value checked operation of the charger of second embodiment.
Embodiment
Describe various exemplary embodiments of the present invention, feature and aspect in detail below with reference to accompanying drawing.
First embodiment
Fig. 1 is the block diagram that illustrates according to the typical structure of the charging system of the first embodiment of the present invention.Charging system shown in Figure 1 comprises charger 200 and battery pack 100.Charger 200 can charge to the battery pack 100 that is installed to charger 200.
Battery pack 100 comprises battery unit 101, battery microcomputer 102, Temperature Detector 103, current detector 104, voltage detector 105, communication unit 106 and control unit 107.Battery unit 101 is secondary cells of lithium ion battery or ni-mh (nickel-hydride) battery etc.Battery microcomputer 102 is positioned at battery pack 100, and comprises current detector 104, voltage detector 105, communication unit 106 and control unit 107.
Temperature Detector 103 is realized by the temperature-detecting device of thermistor etc., and can be used the resistance value of reference voltage accounting temperature checkout gear.Temperature Detector 103 can use first method of measurement and second method of measurement, wherein, the resistance value that the reference voltage that first method of measurement is used to be provided from battery microcomputer 102 comes the accounting temperature checkout gear, second method of measurement are used the resistance value of coming the accounting temperature checkout gear from charging control integrated circuit (IC) 203 reference voltages that provided.Can come the temperature of counting cell group 100 according to the resistance value of using first method of measurement to be calculated.Also can come the temperature of counting cell group 100 according to the resistance value of using second method of measurement to be calculated.
Current detector 104 uses the voltage of current sensing resistor to detect the charging current that flows through battery unit 101.Voltage detector 105 detects the voltage of battery unit 101.Control unit 107 Control current detectors 104, voltage detector 105 and communication unit 106, and can come the temperature of counting cell group 100 according to the resistance value of using first method of measurement to be calculated.
Control unit 107 is to communication unit 106 output battery status informations.In the present embodiment, the temperature of the battery pack 100 that current detector 104 detected charging current values, voltage detector 105 detected charging voltage values, control unit 107 are calculated and the charging capacity of the battery unit 101 that control unit 107 calculates are called " battery status information ".107 pairs of current detectors of control unit, the 104 detected charging currents that flow through battery unit 101 are carried out integration, thus the charging capacity of counting cell unit 101.Communication unit 106 will send to charger 200 from the battery status information of control unit 107 outputs.
Charger 200 comprises interchange (AC) input unit 201, AC-DC (AC/DC) transducer 202, charging control IC 203, current control device 204, current sensing means 205, display unit 206 and charger microcomputer 301.Charger microcomputer 301 is positioned at charger 200, and comprises current detector 302, voltage detector 303, communication unit 304 and control unit 305.AC input unit 201 is connected to the commercial AC power supply, and provides electric power to charger 200.202 pairs of electric power that provide from commercial AC power supplies of AC/DC transducer carry out rectification, and are wieldy dc voltage with the power conversions after the rectification.
Charging control IC 203 control flows are crossed the charging current of battery pack 100.Current control device 204 is such as the transistor of restriction charging current or prevents the device of restriction charging current of the diode etc. of adverse current.Current sensing means 205 is the resistors that for example detect charging current.Display unit 206 is display unit of light-emitting diode (LED) or LCD (LCD) etc., and display unit 206 is to the charged state of user notification charger 200.Current detector 302 detects charging current value according to current sensing means 205 detected values.Voltage detector 303 detects the value of the charging voltage on the terminal that is applied to battery pack 100.If do not apply charging voltage, then voltage detector 303 can detect the terminal voltage of the battery pack 100 that is installed to charger 200.
305 pairs of control units are installed to the charging of the battery pack 100 of charger 200 and control.Control unit 305 Control current detectors 302, voltage detector 303 and communication unit 304, and can come the temperature of counting cell group 100 according to the resistance value of using second method of measurement to calculate.305 pairs of current detectors of control unit, the 302 detected charging currents that flow through battery unit 101 are carried out integration, thus the charging capacity of counting cell unit 101.
In first embodiment, the temperature of the battery pack 100 that current detector 302 detected charging current values, voltage detector 303 detected charging voltage values, control unit 305 are calculated and the charging capacity of the battery unit 101 that control unit 305 calculates are called " charging status information ".Control unit 305 compares charging status information and the battery status information that sends from battery microcomputer 102.If the difference of charging status information and battery status information surpasses preset value, then control unit 305 is judged as the battery pack 100 that is installed to charger 200 and is not in normal condition, and sends the charging stop signals to charging control IC 203.Communication unit 106 in communication unit 304 and the battery pack 100 communicates and receives battery status information.
Fig. 2 is used to illustrate the flow chart that utilizes the operation that charger 200 charges, and wherein, 200 pairs of chargers are installed to the battery pack 100 of charger 200 and charge.
In step S001, charger microcomputer 301 judges whether battery pack 100 is installed to charger 200.Be installed to charger 200 (being "Yes" in step S001) if be judged as battery pack 100, then flow chart enters step S002 from step S001.In step S002, charger microcomputer 301 begins battery pack 100 chargings.In step S003, voltage detector 303 detects the terminal voltage of battery pack 100, and judges whether the terminal voltage of battery pack 100 is the magnitude of voltage that can communicate between charger microcomputer 301 and battery microcomputer 102.If be judged as the magnitude of voltage (among step S003s be "Yes") of terminal voltage for communicating of battery pack 100, then flow chart enters step S004 from step S003.
In step S004, communicating by letter between beginning charger microcomputer 301 and the battery microcomputer 102.Particularly, battery microcomputer 102 sends from the battery status information of control unit 107 outputs by communication unit 106, and charger microcomputer 301 receives battery status information by communication unit 304.In step S005, judge whether to have finished charging to the battery pack 100 that is installed to charger 200.According to whether the satisfied default condition of finishing judges whether to have finished charging.If satisfy the condition of finishing (being "Yes" in step S005), then flow chart enters step S006 from step S005.In step S006,301 pairs of chargings of charger microcomputer control IC 203 is controlled to stop charging.If do not satisfy the condition of finishing, then continue charging.
Fig. 3 is the flow chart that is used between the step S004 that illustrates at charging operations shown in Figure 2 and the step S005 measured value checked operation that repeats with 30 seconds interval (predetermined time interval).The measured value checked operation is to utilize 305 pairs of charging status informations of control unit in the charger microcomputer 301 to compare with the battery status information that sends from battery microcomputer 102 and judge whether battery pack 100 is not in the operation of normal condition.
In step S101, control unit 305 is determined relatively item.If relatively item is confirmed as " magnitude of voltage ", then voltage detector 303 detected charging voltage values and voltage detector 105 detected charging voltage values are compared.
If relatively item is confirmed as " current value ", then current detector 302 detected charging current values and current detector 104 detected charging current values are compared.If relatively item is confirmed as " temperature ", then the temperature of the temperature of the battery pack 100 that control unit 305 is calculated and the battery pack 100 that control unit 107 is calculated compares.If relatively item is confirmed as " charging capacity ", then the charging capacity of the charging capacity of the battery unit 101 that control unit 305 is calculated and the battery unit 101 that control unit 107 is calculated compares.That is, between the charging status information of as a comparison same type and battery status information, compare.
In step S102, control unit 305 is provided for judging whether battery pack 100 is not in the required decision content α of normal condition.In step S103, the corresponding charging status information of comparison item that charger microcomputer 301 is determined among detection or calculating and the step S101 at least.In step S104, charger microcomputer 301 communicates with battery microcomputer 102, and receive at least with step S101 in the corresponding battery status information of comparison item determined.In step S105, the charging status information that control unit 305 will detect or calculate in step S103 compares with the battery status information of received battery pack 100 in step S104, and calculates poor between charging status information and the battery status information.
In step S106, judge whether the difference that is calculated is less than or equal to decision content α set in step S102 in step S105.If the difference that is calculated in step S105 is less than or equal to decision content α (being "Yes" in step S106), then flow chart enters step S107 from step S106.In step S107, be judged as battery pack 100 and be in normal condition, and flow chart enters step S108 from step S107.In step S108, continue the operation that battery pack 100 is charged.On the contrary, if the difference that is calculated in step S105 is not to be less than or equal to decision content α (being "No" in step S106), then flow chart enters step S109 from step S106.In step S109, be judged as battery pack 100 and be not in normal condition, and flow chart enters step S110 from step S109.In step S110,301 pairs of chargings of charger microcomputer control IC
203 control the operation of battery pack 100 being charged to stop.After the processing of step S110, stop measured value checked operation shown in Figure 3 and charging operations shown in Figure 2.
As mentioned above, according to first embodiment, charger 200 can use from the battery pack 100 received charging status informations that battery status information and charger 200 detected or calculated judges whether battery pack 100 is not in normal condition.
Be not in normal condition if charger 200 is judged as battery pack 100, then charger 200 can stop operation that battery pack 100 is charged.Therefore, control the operation that battery pack 100 is charged safely by charger 200.
Second embodiment
Fig. 4 is the flow chart that is used to illustrate the measured value checked operation of charger 200 according to a second embodiment of the present invention.In a second embodiment, the part different with first embodiment is described.
With reference to figure 4, step S101～step S110 is identical with the step S101～step S110 according to the measured value checked operation of first embodiment that uses Fig. 3 explanation.Provide and the identical Reference numeral of Reference numeral among Fig. 3 for these steps, and no longer repeat explanation it.
In step S201,305 pairs of charging status informations that detect or calculate in step S103 of control unit are proofreaied and correct.In step S202,305 pairs of battery status informations received in step S104 of control unit are proofreaied and correct.For example, if relatively item is " magnitude of voltage ", the voltage of then proofreading and correct measurement point in step S201 and step S202 reduces.
That is, there is the factor that detects the voltage reduction of the measurement point of charging voltage value and the measurement point that voltage detector 105 detects charging voltage value at voltage detector 303 that causes.Particularly, for example, the voltages that caused by current control device 204 and current sensing means 205 of 102 pairs of charger microcomputer 301 and battery microcomputers reduce and are proofreaied and correct by the voltage that line impedance the caused reduction between the terminal of the terminal of contact resistance or charger 200 and battery pack 100.
As mentioned above, according to second embodiment, charger 200 can use from the received charging status information that battery status information and charger 200 detected or calculated of battery pack 100, judges more accurately whether battery pack 100 is not in normal condition.
Be not in normal condition if charger 200 is judged as battery pack 100, then charger 200 can stop operation that battery pack 100 is charged.Therefore, control the operation that battery pack 100 is charged safely by charger 200.
Although the present invention has been described, should be appreciated that the present invention is not limited to disclosed exemplary embodiments with reference to exemplary embodiments.The scope of appended claims meets the wideest explanation, to comprise all these class modifications, equivalent structure and function.

Claims (14)

1. a charger is used for the battery unit that comprises secondary cell is charged, and described charger comprises:
Receiving element if be used for described secondary cell being charged, then receives the battery status information of the state of the described battery unit of expression from described battery unit;
Detecting unit if be used for described secondary cell being charged, then detects the charging status information of the state of the described battery unit of expression;
Judging unit is used to use described battery status information and described charging status information to judge whether described battery unit is in normal condition; And
Control unit is used for whether being in normal condition according to described battery unit and controls charging to the described secondary cell of described battery unit.
2. charger according to claim 1 is characterized in that, described judging unit uses the difference between described battery status information and the described charging status information to judge whether described battery unit is in normal condition.
3. charger according to claim 2 is characterized in that, if described difference is less than or equal to predetermined value, then described judgment unit judges is that described battery unit is in normal condition.
4. charger according to claim 1 is characterized in that, described battery status information and described charging status information are represented at least one in charging voltage value, charging current value, temperature and the charging capacity of described battery unit.
5. charger according to claim 1 is characterized in that, also comprises correcting unit, and described correcting unit is used to proofread and correct described charging status information,
Wherein, described judging unit uses described battery status information and judges by the charging status information after the described correcting unit correction whether described battery unit is in normal condition.
6. charger according to claim 5 is characterized in that, described battery status information and described charging status information are represented the charging voltage value of described battery unit.
7. charger according to claim 1 is characterized in that, is not in normal condition if described judgment unit judges is described battery unit, and then described control unit is controlled stopping described secondary cell is charged.
8. charging system comprises:
Battery unit, it comprises secondary cell; And
Charger is used for described secondary cell is charged, wherein,
Described battery unit comprises:
First detecting unit if be used for described secondary cell being charged, then detects the battery status information of the state of the described battery unit of expression; And
Transmitting element is used for sending described battery status information to described charger, and
Described charger comprises:
Second detecting unit if be used for described secondary cell being charged, then detects the charging status information of the state of the described battery unit of expression;
Receiving element if be used for described secondary cell being charged, then receives described battery status information from described battery unit;
Judging unit is used to use described battery status information and described charging status information to judge whether described battery unit is in normal condition; And
Control unit is used for whether being in normal condition according to described battery unit and controls charging to the described secondary cell of described battery unit.
9. charging system according to claim 8 is characterized in that, described judging unit uses the difference between described battery status information and the described charging status information to judge whether described battery unit is in normal condition.
10. charging system according to claim 9 is characterized in that, if described difference is less than or equal to predetermined value, then described judgment unit judges is that described battery unit is in normal condition.
11. charging system according to claim 8 is characterized in that, described battery status information and described charging status information are represented at least one in charging voltage value, charging current value, temperature and the charging capacity of described battery unit.
12. charging system according to claim 8 is characterized in that, described charger also comprises correcting unit, and described correcting unit is used to proofread and correct described charging status information,
Wherein, described judging unit uses described battery status information and judges by the charging status information after the described correcting unit correction whether described battery unit is in normal condition.
13. charging system according to claim 12 is characterized in that, described battery status information and described charging status information are represented the charging voltage value of described battery unit.
14. charging system according to claim 8 is characterized in that, is not in normal condition if described judgment unit judges is described battery unit, then described control unit is controlled stopping described secondary cell is charged.
CN2008101801270A 2007-12-27 2008-11-27 Charging system and charger Expired - Fee Related CN101471578B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2007336845A JP5188173B2 (en) 2007-12-27 2007-12-27 Charger
JP2007336845 2007-12-27
JP2007-336845 2007-12-27

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CN101471578B CN101471578B (en) 2012-07-04

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